Comment by zedpm

It's worth noting that AWS's free tier has absolutely no safety net and you can easily end up with an unexpected bill, sometimes a very large one. The single best thing AWS could do to encourage people to learn about its services by trying them out would be to have a safe-by-default billing configuration. A user should have to flip a switch in their account to allow any usage over a given dollar amount, with services being halted in the event they would breach this limit without having flipped that switch.